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The infective stage of Plasmodium injected into humans by the female Anopheles mosquito is the:

ASchizont
BGametocyte
CTrophozoite
DSporozoite — stored in the mosquito's salivary glands
Answer & Solution
Correct answer: D. Sporozoite — stored in the mosquito's salivary glands
**Sporozoites** are stored in the mosquito's **salivary glands** and injected into humans during the bite. In the human, they multiply in liver cells → infect RBCs → release **haemozoin** (toxic substance, causes chills + high fever every 3–4 days).
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